请输入您要查询的英文单词:

 

单词 proustite
释义

proustite


proustite

(ˈpruːstaɪt) n (Minerals) a red mineral consisting of silver arsenic sulphide in hexagonal crystalline form. Formula: Ag3AsS3[C19: from French, named after Joseph Louis Proust (1754–1826), French chemist]
Translations
прустит

Proustite


proustite

[′prü‚sīt] (mineralogy) Ag3 AsS3 A cochineal-red mineral that crystallizes in the rhombohedral system, consists of silver arsenic sulfide, is isomorphous with pyrargyrite, and occurs massively and in crystals. Also known as light-red silver ore; light-ruby silver.

Proustite

 

(also light red silver ore), a mineral of chemical composition Ag3AsS3. It crystallizes in the trigonal system, and its basic structure consists of pyramidal groups of AsS3 and spiral-shaped chains of Ag2S. Proustite occurs as disseminated grains, crystals, and compact masses. It is ruby red in color and brittle, with a hardness of 2–2.5 on Mohs’ scale and a density of 5,570–5,670 kg/m3. It is formed chiefly in lead-zinc-silver hydrothermal ore deposits. Although it is one of the basic minerals in silver ore, it is less widespread than pyrargyrite and does not form significant accumulations.

In the USSR, there are deposits of proustite in the Altai, the Far East, Kazakhstan, and Middle Asia. The mineral is also found in the German Democratic Republic, the Federal Republic of Germany, Czechoslovakia, Canada, Mexico, Bolivia, Peru, and Chile. Methods have been developed for growing proustite crystals of optical quality from melts. Proustite is a ferroelectric and is transparent in the infrared region. It is considered a promising material for nonlinear optics and acousto-optical devices.

A. S. MARFUNIN

随便看

 

英语词典包含2567994条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/3/3 6:40:31